HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Francisco

$479+ Cheap flights from Shannon (SNN) to San Francisco (SFO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/16. Fares are subject to change and may not be available on all flights or dates of travel.
SNN — SFO
Dec 23 — Dec 301
Mon 12/23
Mon 12/30
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Shannon to San Francisco with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Shannon to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Shannon (SNN) to San Francisco (SFO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 18, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,192
(American Airlines)

One-way from

$479
(Kiwi.com)

Popular in

July

Cheapest in

September

Average price

$730
Provider with most accurate pricing for Shannon-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Shannon-San Francisco flights.
Search Deals
From Shannon to San Francisco
Search Deals
One-way flight from Shannon to San Francisco
Search Deals
High demand for flights, 12% potential price rise
Search Deals
Best time to find cheap flights, 3% potential price drop
Search Deals
Average for round-trip flights in December 2024
Search Deals

Find flight deals from Shannon to San Francisco

Cheapest flights from Shannon to San Francisco
Explore the most affordable flight options available from Shannon to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2024.

This Justfly.com deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/268:05 pmSNN - SFO
1 stop26h 55mBritish Airways
Sat 1/410:11 pmSFO - SNN
2 stops53h 19mBritish Airways
Deal found 12/17$1,188
This American Airlines deal was found by Cheapflights users on 12/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/287:45 amSNN - SFO
2 stops21h 10mAmerican Airlines
Tue 1/75:20 pmSFO - SNN
2 stops18h 05mAmerican Airlines
Deal found 12/18$1,192
This Air Canada deal was found by Cheapflights users on 12/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/287:45 amSNN - SFO
3 stops23h 23mAir Canada
Tue 1/710:45 pmSFO - SNN
2 stops28h 45mAir Canada
Deal found 12/18$1,449
This American Airlines deal was found by Cheapflights users on 12/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/287:45 amSNN - SFO
1 stop15h 15mMultiple Airlines
Tue 1/75:30 pmSFO - SNN
1 stop15h 15mMultiple Airlines
Deal found 12/18$1,922

Find flights from Shannon to San Francisco within your budget

Customize your flight search to find flights from Shannon to San Francisco that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Sat 12/28

7:45 am-8:55 pm

2 stops21h 10m

San Francisco

Tue 1/7

5:20 pm-7:25 pm

2 stops18h 05m

$1,192

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Sat 12/28

7:45 am-9:11 pm

2 stops21h 26m

San Francisco

Tue 1/7

5:30 pm-7:25 pm

1 stop17h 55m

$1,438

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Sat 12/28

7:45 am-11:08 pm

3 stops23h 23m

San Francisco

Tue 1/7

10:45 pm-11:30 am

2 stops28h 45m

$1,449

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Sat 12/28

7:45 am-3:00 pm

1 stop15h 15m

San Francisco

Tue 1/7

5:30 pm-4:45 pm

1 stop15h 15m

$1,922

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Wed 4/16

2:15 pm-2:35 pm

3 stops32h 20m

$479

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Mon 1/13

8:05 pm-3:30 pm

2 stops27h 25m

$559

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Fri 5/23

1:05 pm-9:12 pm

1 stop16h 07m

$671

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Mon 1/13

7:45 am-6:45 pm

1 stop19h 00m

$814

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Fri 5/23

12:30 pm-2:40 pm

3 stops34h 10m

$1,086

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Thu 3/13

2:00 pm-1:04 am

1 stop18h 04m

$4,090

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Compare providers for flights from Shannon to San Francisco

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Shannon to San Francisco in December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Shannon-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Shannon-San Francisco flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Shannon-San Francisco flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Shannon-San Francisco flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Shannon-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Shannon to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Shannon with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Shannon to San Francisco

Get recent, data-driven insights about flights from Shannon to San Francisco including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Shannon to San Francisco?

Currently, January is the cheapest month in which you can book a flight from Shannon to San Francisco (average of $276). Flying from Shannon to San Francisco in June is currently the most expensive (average of $381). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Rainfall in San Francisco by month

Plan your trip to San Francisco by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

Temperature in San Francisco by month

Plan your trip to San Francisco by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Francisco. Reviews last updated December 18, 2024.
Delta
8.0
Very good
8,604 reviews

Crew

8.6

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,604 reviews
Delta
8.0
Very good
8,604 reviews

Crew

8.6

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

JetBlue
7.4
Good
3,279 reviews
Delta
8.0
Very good
8,604 reviews

Crew

8.6

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines
7.4
Good
9,059 reviews
Delta
8.0
Very good
8,604 reviews

Crew

8.6

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
8,604 reviews

Crew

8.6

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Aer Lingus
7.1
Good
1,073 reviews
Delta
8.0
Very good
8,604 reviews

Crew

8.6

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Shannon to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Shannon to San Francisco round-trip?

    Currently priced at $1,192, American Airlines will fly you from Shannon to San Francisco and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from British Airways and Air Canada - these airlines can fly you to your destination from $1,438 and $1,449, respectively.

  • What are the cheapest airlines to fly from Shannon to San Francisco one-way?

    The cheapest airlines for a one-way flight from Shannon to San Francisco are Aer Lingus ($559), Delta ($671), and British Airways ($814).

  • Can I find deals for flights from Shannon to San Francisco that include hotel bookings?

    Yes. In addition to deals on Shannon to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Shannon to San Francisco?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Shannon to San Francisco.

  • Can I find deals for business class flights from Shannon to San Francisco?

    Yes. Cheapflights offers flight deals from Shannon to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Shannon to San Francisco?

    Currently, January is the cheapest month in which you can book a flight from Shannon to San Francisco (average of $276). Flying from Shannon to San Francisco in June is currently the most expensive (average of $381). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.